반응 #672356

ord-8f5ba84362864e71aed5b0641c186bc8

반응 조건

상세 조건
See reaction.notes.procedure_details.

후처리

  1. 1
    온도After refluxing for 20 hr
  2. 2
    농축the solution was concentrated
  3. 3
    여과filtered through a plug of silica gel eluting with 20% ethyl acetate
  4. 4
    기타was used in the next step without further purification

실험 절차

0.60 g (3.2 mmol) of the product of step 2 was dissolved in 50 mL of carbon tetrachloride, along with 0.54 g (3.5 mmol) of N-chloro succinimide and a catalytic amount of benzoyl peroxide. After refluxing for 20 hr, the solution was concentrated and filtered through a plug of silica gel eluting with 20% ethyl acetate:hexane. The resulting oil was contaminated with ˜10% of unreacted starting material and was used in the next step without further purification. NMR (200 MHz, CDCl3) δ 7.96 (m, 2H, ArH), 7.63 (m, 1H, ArH), 7.43 (m, 1H, ArH), 7.17 (m, 3H, ArH), 4.72 (s, 2H, CH2Cl).

출처

DOI: 10.6084/m9.figshare.5104873.v1특허: US06930131B2uspto-grants-2005_08